Answer: Goes almost to completion.
- A Barely proceeds according to conventional understanding
- B Goes almost to completion
- C Is at equilibrium in routine practice
- D Is endothermic overall
Correct answer: B. Goes almost to completion
Explanation: Large Kc means products are highly favoured; the reaction proceeds nearly to completion.
As the reaction proceeds, reactant concentration falls and product concentration rises until both level off at equilibrium.
Concept context
When forward and reverse reaction rates are equal, equilibrium is reached. Learn about Kc, Kp, Le Chatelier's principle, and acid-base equilibria, including pH, buffer solutions, and solubility product.